package biz.ezcom.design.pattern.strategy;

/**
 * 打折策略抽象
 */
public interface Strategy {
	//定义打折策略类型
	public static final String NOMARL = "normal";
	public static final String REBATE = "rebate";
	public static final String RETURN = "return";
	
	public double getResult(double cash);
}
